Author: hselasky
Date: Wed May 8 10:38:31 2019
New Revision: 347269
URL: https://svnweb.freebsd.org/changeset/base/347269
Log:
Add sysctl(8) to control fast unload support in mlx5core.
MFC after: 3 days
Sponsored by: Mellanox Technologies
Modified:
head/sys/dev/mlx5/mlx5_core/mlx5_main.c
Modified: head/sys/dev/mlx5/mlx5_core/mlx5_main.c
==============================================================================
--- head/sys/dev/mlx5/mlx5_core/mlx5_main.c Wed May 8 10:38:06 2019
(r347268)
+++ head/sys/dev/mlx5/mlx5_core/mlx5_main.c Wed May 8 10:38:31 2019
(r347269)
@@ -1,5 +1,5 @@
/*-
- * Copyright (c) 2013-2017, Mellanox Technologies, Ltd. All rights reserved.
+ * Copyright (c) 2013-2019, Mellanox Technologies, Ltd. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -68,6 +68,11 @@ MODULE_PARM_DESC(prof_sel, "profile selector. Valid ra
SYSCTL_NODE(_hw, OID_AUTO, mlx5, CTLFLAG_RW, 0, "mlx5 HW controls");
+static int mlx5_fast_unload_enabled = 1;
+SYSCTL_INT(_hw_mlx5, OID_AUTO, fast_unload_enabled, CTLFLAG_RWTUN,
+ &mlx5_fast_unload_enabled, 0,
+ "Set to enable fast unload. Clear to disable.");
+
#define NUMA_NO_NODE -1
static LIST_HEAD(intf_list);
@@ -1417,6 +1422,11 @@ static int mlx5_try_fast_unload(struct mlx5_core_dev *
{
bool fast_teardown, force_teardown;
int err;
+
+ if (!mlx5_fast_unload_enabled) {
+ mlx5_core_dbg(dev, "fast unload is disabled by user\n");
+ return -EOPNOTSUPP;
+ }
fast_teardown = MLX5_CAP_GEN(dev, fast_teardown);
force_teardown = MLX5_CAP_GEN(dev, force_teardown);
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